WO2006037251A1 - Zündkerze mit optischem sensor - Google Patents
Zündkerze mit optischem sensor Download PDFInfo
- Publication number
- WO2006037251A1 WO2006037251A1 PCT/CH2005/000580 CH2005000580W WO2006037251A1 WO 2006037251 A1 WO2006037251 A1 WO 2006037251A1 CH 2005000580 W CH2005000580 W CH 2005000580W WO 2006037251 A1 WO2006037251 A1 WO 2006037251A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- spark plug
- lens
- plug according
- combustion chamber
- optical window
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/10—Testing internal-combustion engines by monitoring exhaust gases or combustion flame
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
- G01L23/08—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid operated electrically
- G01L23/16—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid operated electrically by photoelectric means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
- G01L23/22—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
- G01L23/22—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
- G01L23/221—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines for detecting or indicating knocks in internal combustion engines
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/48—Sparking plugs having means for rendering sparks visible
Definitions
- the invention relates to a spark plug with an optical window for detecting combustion processes in a Otomotorotor, wherein the optical window in the Mittel ⁇ electrode of the spark plug is.
- optical sensors are used. These measure the brightness in the combustion chamber and thus provide information about the time sequence of the events during combustion.
- optical sensors are accommodated, for example, in spark plugs.
- these tend to become dirty after a short time, which means that optical sensors are occasionally installed in the center electrode of sensors.
- the surfaces are exposed to high temperatures, which causes them to be cleaned, as the soot deposited there burns due to the heat.
- Spark plugs of the initially mentioned type are known.
- DE 3001711 by Robert Bosch GmbH sets out various embodiments, wherein, for example, a sapphire rod is used or a bundle of light guides.
- a disadvantage of these arrangements is that the sapphire rod has a very small opening angle and that the bundle of optical fibers can not be assigned to the exact positions. It should be noted that in order to investigate knocking, the areas must be evaluated flat around the spark plug.
- the object of the present invention is to specify a spark plug with an optical sensor which can detect the light emission in a planar manner around the spark plug and, if possible, permits a direction-dependent evaluation.
- the optical window has at least one lens which is made ⁇ the combustion chamber is set, and at least one flexible light guide, which can pass light from the lens through the spark plug into an evaluation system.
- FIG. 1 shows a schematic representation of a tip of a spark plug according to the invention
- FIG. 1 shows a schematic representation of a tip of a spark plug 1 according to the invention. This comprises a center electrode 2 and a ground electrode 3, these two electrodes being separated from one another by an insulator 4. During an ignition process, a spark strikes between the two electrodes.
- the sparkling spark plugs are shown in the examples presented here. These have the advantage of less obstructing the view of the optical window. Other spark plugs can also be used.
- the center electrode 2 has the shape of a tube and thus has an inner opening. This opening is provided at its end facing the combustion chamber 10 with a lens 5.
- the axis of the lens 5 extends in each spark plug axis.
- the lens 5 is designed in such a way that light L incident at right angles to the lens axis is deflected by 90 ° into the lens 5.
- the light beam is directed into one of the numerous flexible optical fibers 6, which are arranged adjacent to the lens 5 on its inner surface on a circle.
- the lens 5 is shown in Fig. 1.
- This lens has a substantially cylindrical shape, wherein the edge facing the combustion chamber 10 has a refraction phase 7. At this refraction phase 7, light L, which impinges on the lens 5 from a direction perpendicular to the axis A, is deflected onto an opposing notch 8.
- This notch 8 extends annularly on the lateral surface of the cylinder. Your the combustion chamber 10 facing away from phase 9 is mirrored. The light beam striking this phase 9 is deflected in the desired direction and finally enters the light guide 6.
- the mirror is achieved by coating the phase, for example, with platinum or gold. Since this layer is not exposed directly to the combustion chamber 10, there is no risk of damage due to combustion in the engine.
- a further light guide 6 ' can be arranged centrally adjacent to the lens at its inner surface. Vor ⁇ geous enough, the inner surface of the lens 5 is designed concave.
- FIG. 2 shows a double-lens system with the lenses 5 'and 5 ".
- This double-lens system consists of at least one substantially plano-concave lens 5 "and a double-concave lens 5 ', wherein the plane side of the plano-concave lens 5" is exposed to the combustion chamber.
- the central light guide 6 ' immediately adjoins the double concave lens 5'.
- the lenses may be designed such that a detection angle of the double lens system 5 ', 5 "has at least 120 °, preferably at least 135 °, in particular up to 140 °. This arrangement also allows a detection of Licht ⁇ rays L, which come from the lateral region of the spark plug.
- the lenses are made of sapphire or quartz glass.
- the lenses as well as the light guides are surrounded by a sleeve which fills the function of the center electrode 2.
- This sleeve is advantageously made of platinum or gold or an alloy thereof.
- the optical sensor including the lenses and the light guides are generally smaller in diameter than 2mm, usually between 1.5 and 1.8mm.
- the central hollow space of the center electrode 2 must therefore have this mass.
- the spark plug a sustained temperature load of 600 0 C and a short-term temperature load of 900 0 C endures.
- the advantage of this invention is that a measuring system can be offered with this spark plug, which on the one hand does not become dirty, thanks to the arrangement of the optical windows in the center electrode 2, but on the other hand, it is possible to record measured data in individual areas can also be evaluated individually.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spark Plugs (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Testing Of Engines (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05786406A EP1797408B1 (de) | 2004-10-06 | 2005-10-05 | Zündkerze mit optischem sensor |
US11/576,744 US7696679B2 (en) | 2004-10-06 | 2005-10-05 | Spark plug with optical sensor |
JP2007534987A JP4689675B2 (ja) | 2004-10-06 | 2005-10-05 | 光学センサを有するスパーク・プラグ |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH16622004 | 2004-10-06 | ||
CH1662/04 | 2004-10-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006037251A1 true WO2006037251A1 (de) | 2006-04-13 |
Family
ID=34974740
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CH2005/000580 WO2006037251A1 (de) | 2004-10-06 | 2005-10-05 | Zündkerze mit optischem sensor |
Country Status (4)
Country | Link |
---|---|
US (1) | US7696679B2 (de) |
EP (1) | EP1797408B1 (de) |
JP (2) | JP4689675B2 (de) |
WO (1) | WO2006037251A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2131171A1 (de) | 2008-06-06 | 2009-12-09 | AVL List GmbH | Messeinrichtung |
JP2010011209A (ja) * | 2008-06-27 | 2010-01-14 | Toshiba Corp | 照度センサユニット、及び表示装置 |
US9759178B2 (en) * | 2013-08-26 | 2017-09-12 | Shimadzu Corporation | Plug built-in type optical measurement probe, and optical measurement device provided with the same |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7987712B2 (en) * | 2008-12-10 | 2011-08-02 | Rosemount Aerospace Inc. | High temperature seal assembly for optical sensor |
US20110115916A1 (en) * | 2009-11-16 | 2011-05-19 | Eiji Yafuso | System for mosaic image acquisition |
US20110239621A1 (en) * | 2010-03-30 | 2011-10-06 | Meneely Clinton T | Fiber optic microphones for active combustion control |
JP6317277B2 (ja) * | 2015-02-18 | 2018-04-25 | トヨタ自動車株式会社 | 内燃機関の燃料ガス濃度測定装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4419212A (en) * | 1981-02-07 | 1983-12-06 | Robert Bosch Gmbh | Combination gas oxygen concentration and combustion light sensor |
USH2034H1 (en) * | 1998-03-23 | 2002-07-02 | The United States Of America As Represented By The Secretary Of The Air Force | Instrumentation spark plug |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US954697A (en) * | 1909-05-24 | 1910-04-12 | Randall Faichney Company | Spark-plug. |
US1458636A (en) * | 1920-09-23 | 1923-06-12 | Joseph J Wisniowski | Spark plug |
US1452868A (en) * | 1921-02-16 | 1923-04-24 | Chase Companies Inc | Visible spark plug |
GB1206997A (en) * | 1968-05-20 | 1970-09-30 | Ct Pa Handelsgesellschaft M B | Spark plug |
US4393687A (en) * | 1980-01-18 | 1983-07-19 | Robert Bosch Gmbh | Sensor arrangement |
US4412446A (en) * | 1981-03-20 | 1983-11-01 | Robert Bosch Gmbh | Optical combustion sensor, particularly for use with internal combustion engines |
DE3147291A1 (de) * | 1981-11-28 | 1983-06-01 | Robert Bosch Gmbh, 7000 Stuttgart | Sensor |
JPS60177225A (ja) * | 1984-02-24 | 1985-09-11 | Toyota Motor Corp | 内燃機関の着火時期センサ |
JPS6229477U (de) * | 1985-08-06 | 1987-02-23 | ||
JPH0160386U (de) * | 1987-10-06 | 1989-04-17 | ||
JP2801688B2 (ja) * | 1989-10-23 | 1998-09-21 | 株式会社ジャパンエナジー | 内燃機関の動作状態検出装置 |
JPH04143443A (ja) * | 1990-10-04 | 1992-05-18 | Hitachi Ltd | 内燃機関の燃焼制御方法及び装置 |
JP2796023B2 (ja) * | 1992-12-01 | 1998-09-10 | 三菱電機株式会社 | 燃焼制御装置 |
DE19846356A1 (de) * | 1998-10-08 | 2000-04-13 | Bosch Gmbh Robert | Vorrichtung zur Überwachung des Verbrennungsvorgangs in Verbrennungsmotoren |
GB2385914B (en) * | 2001-10-19 | 2004-03-03 | Visteon Global Tech Inc | LCC-Based fluid-level detection sensor |
US7022968B1 (en) * | 2003-10-21 | 2006-04-04 | National Semiconductor Corporation | Optical sensor that measures the light output by the combustion chamber of an internal combustion engine |
EP1706719B1 (de) * | 2004-01-24 | 2008-03-19 | Kistler Holding AG | Optischer sensor |
US20070152557A1 (en) * | 2005-12-31 | 2007-07-05 | Packard Thomas G | Light transmitting sparkplug |
-
2005
- 2005-10-05 US US11/576,744 patent/US7696679B2/en not_active Expired - Fee Related
- 2005-10-05 WO PCT/CH2005/000580 patent/WO2006037251A1/de active Application Filing
- 2005-10-05 EP EP05786406A patent/EP1797408B1/de not_active Not-in-force
- 2005-10-05 JP JP2007534987A patent/JP4689675B2/ja not_active Expired - Fee Related
-
2011
- 2011-01-14 JP JP2011005403A patent/JP2011102589A/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4419212A (en) * | 1981-02-07 | 1983-12-06 | Robert Bosch Gmbh | Combination gas oxygen concentration and combustion light sensor |
USH2034H1 (en) * | 1998-03-23 | 2002-07-02 | The United States Of America As Represented By The Secretary Of The Air Force | Instrumentation spark plug |
Non-Patent Citations (1)
Title |
---|
MINORU OHSUGA ET AL.: "study on engine combustion analysis", HITACHI REVIEW, vol. 39, no. 5, October 1990 (1990-10-01), TOKYO, JP, pages 299 - 306, XP000219780 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2131171A1 (de) | 2008-06-06 | 2009-12-09 | AVL List GmbH | Messeinrichtung |
JP2010011209A (ja) * | 2008-06-27 | 2010-01-14 | Toshiba Corp | 照度センサユニット、及び表示装置 |
US9759178B2 (en) * | 2013-08-26 | 2017-09-12 | Shimadzu Corporation | Plug built-in type optical measurement probe, and optical measurement device provided with the same |
Also Published As
Publication number | Publication date |
---|---|
EP1797408A1 (de) | 2007-06-20 |
JP2011102589A (ja) | 2011-05-26 |
US20080211373A1 (en) | 2008-09-04 |
US7696679B2 (en) | 2010-04-13 |
EP1797408B1 (de) | 2012-06-20 |
JP2008516126A (ja) | 2008-05-15 |
JP4689675B2 (ja) | 2011-05-25 |
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